const fs=require("fs");
const http=require("http");
const url=require("url");
const path=require("path");
const { rejects } = require("assert");
function readFile(pathfile){
    return new Promise((resolve,reject)=>{
          fs.readFile(pathfile,"utf-8",(err,data)=>{
             if(err){
                 reject(err);
                 return
             }
                 resolve(data);
          })
    })
}
readFile("index.js").then(result=>{
    console.log(result);
}).catch(err=>{
    console.log(err);
});